Pipe-coupling.



11. E. KEYES. PIPE GOUPLING. APPLIOATONILBD MAR. 12, 1900.

J9 j? WMZ.. J7

Patented May 11, 1909.

UNITED sTA'rEs ParENT oFmeE.

HARRY E. KEYES, OF HOMESTEAD, PENNSYLVANIA, ASSIGNOR- TO JOSEPI-LA. DOYLE, Ol-` i HOMESTEAD, PENNSYLVANIA. i

r PIPE-COUPLING.

To all 'whom it may concern:

Be it known. that I, HARRY E. KEYES, a

citizen ofthe UnitedStates, residing at Homestead, in Vthe county of Allegheny and State of Pennsylvania, have invented newv and useful Improvements in Pipe-Couplings, of which the followingvis a specification.

My invention relates to pipe-coiplings and more particularly to couplings a apted for pipes for high-pressure uids such as compressedl air. In' devices of this kind heretofore employed one of the chief objections has been the liability of the coupling to be disconnected and the hose or pipe blown out by a sudden ilow of excessive pressure. p

One object of my invention is to provide hose-grippin members of a particular forml that will obvlate this objection and provide a secure cnnection.

Other objects are to provide means of ready attachment of the coupling to any other screw connection and to enerally improve and simplify a device of t is character. To these ends my invention is embodied in preferable form in the coupling hereinafter described and illustrated in the accompanying drawings.`

In these drawings, Figure 1, is an exterior elevation showing a broken section of hose between two couplings each embodyingmy invention, and one of said cou lings having a male attachment and the ot er a female attachment; Fig. 2, is a longitudinal section of the parts of Fig. 1; Fi 3, 4, 5

and 6 are detail views in longitu inal section of the coupling members; and Fig. 7, is a detail longltudlnal section of a double cone-bearing sleeve.

Referring to the drawings, 1 designates a section of a flexible hose, shown as having f its opposite ends each secured to one of the improved couplings. In Figs. 1 and 2 the coupling shown on the left is provided with a male screw connection 2, on an outer conearing sleeve member 3, while inv the coupling at the ri ht'of the figures a female screw 4, on a simi ar outer sleeve member 5,

` is provided. These screw connections 2 and 4 may interflt to connect two couplings or they may be em loyed to join the ends of the hose-pipe to, ot er metallic connections.

The construction of the hose-engaging members of the coupling is the same in Specification of Letters Patent.

Application led latch 12, 1906. Serial No. 305,659.

l forms, Referring to the couplin having g the male connection and illustrate in Figs. -1, 2, 3, 4, 5 and 6, the sleeve member 3 is provided withfan interior cone-shaped bearing face 6 at its inner endagainst which is adapted tobe fgrced and clamped the end of the iexible hose section, 1. I .l Adapted to be placed within the end ofthe hose-pipe, preferably by forcing it into said hose is a hard metal rmg 7, having an annular conical ridge 8, the diameter of which is greater than the normal diameter of the 'hose section, whereby. when the ring is inserted, the hose will be distended near 'its outer end so as to form a conical annular shoulder 9, against the faces 10, 11 of which are clamped the cone bearing clamp vmembers of the coupling.

As will appear from the dotted line in Fig. 2, t-he race 12 ofthe ring 7 is slanted from the face 6 of the cone-sleeve 3, so that these faces converge at an acute angle in the direction of the endA of the'hose-pipe. By this angular inclination of the clamping members the compressive gripping action thereof is centered at the point 13, where the corner of the ring 7 presses the hose against the conesleeve 3. As a result the corner ofthe ring will be indented into the hose, effecting a projection of the same beyond the ring into a holding lip 14, and a biting action will be obtained by`tl1e angular clamping contact that will securely hold the ose section againstv slipping from' the coupling under undue pressure. n

To effect the clamping pressure on the cone face 16 1s placed around the hose hind the face 11 of the shoulder 9. Against this exterior rin is ada ted to be clamped an adjustable loc ing and compression member 17 consisting of a sleeve having interior screw-threads 18 which engage threads 19 on the sleeve member 3. The locking sleeve 17 has an annular shoulder 20 bearing against the ring 15, .whereby upon -screwing up the forced against the shoulder of the hose and the latter will be com ressed and clamped between the sleeve 3 and interior cone ring 7. The sleeves 3 and` 17 are provided with suitable projections 21, 22 respectively, wherebv they may be turned by hand or by a wrench to adjust or unlock the coupling. Similarly- Patented May 11, 1909. l

sleeve 17 on the sleeve 3, the ring w1ll besleeve and ring, an annular ring 15 having a scribed muy be made without departing from the sleeve 5 of the right hand eoupling may be provided with projections 23, for the same purpose.

In Fig. 7, there is shown a double-cone bearing sleeve member 24 having similar ends and rovided with threaded shoulders 25 adapte to been aged by adjustable lockingmembers, and niving interior cone surfares 24 to receive the ends of two hose sections. This sleeve member is adapted to connect two sections of hose-and is more artcu# lnrl57 designed to be used to repair a reak in the pipe.

It is clear that changes in the various feutnres of the device herein shown and dethe principle of my invention.

Having thus described my invention what l clnim is: v i In n hose coupling, the combination with 1 eemeea a fiexible hose, of a bearing ring within the hosez' said ring having an exterior conical bearing surface terminatin at the edge of the ring in a substantially s arp bitin edge, the free end of said hose extendin eyond said bitin edge, a cone bearing s eeve exterior to te hose, said sleeve having/its conical bearing surface at a slightly greater angle than the an le of the bearing surface on said ring and being adapted by pressure to clamp the hose ugninst the biting edge of said ring, and mea-ns for clamping said ring and sleeve together.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

HARRY E. KEYES. Witnesses:

A. J. HUNTER, VVILLTAM BARNES. 

